Improved evapoeatoe



@eine fttte gsttmt @fitte PIERRE JOSEPH BADOUX OF NEW YORK, N. Y.

Letters Patent No. 78,639, dated June 9, 1868.

IMPROVED EVAPORATOR.

TVO ALL WHOMIT MAVY' CONCERN; ,1

Be it known that I, PIERRE Josevi: BADOUX, of thecity, county, and State of New York, heve invented a.

new :Amd improved Rotary Evaporzttor, (said the Rnpid,) for all fluids to evaporate quicker without boiling than by boiling; and l do hereby declare that the following'is a full and exact description thereof, referenceI beingv had to the accornpnnying drawings, and to the letters of reference marked thereon.

To enable others skilled in the arts to moho and use my invention, Ijwill proceed to describe its construction and operation.

I construct o. hollowaxis, A, about six feet long, which'is closed in the interior about half way at letter B, and about one foot from each end of thishxis I provide one or two holes', C. I construct solidly and hermetically, on each side from the holes C, the round metallic boxes D, of about four feet in danieter, with a hole large enough so ns the exis A may closely fit the same. The outer surface or periphery should he pierced in eight places, at equal distances, F, about two inches in diameter, for the 'reception of the hollow end of the hollow metallic spiral G, which serpentine or spiral pipes are placed horizontally, rmly, and hermetieally soldered in. l i -By thiscoinbination, thc steam, hot air, and hot water cnn'only pass from one side 'to the axis A, and hy the h'oles C, thence in the box D, and so through ell hollow ends of eachspiral, with the aid of the rotating exis A, which 'is provided with all the'necesary gearing for turning' the same over the vessel lin any convenient vWhat Il elamas my invention, and desire to secure by Letters Patent', isll,he construction of the withirbd'eseribed rotaryeveporator-,for evaporatingall fluids at c. low or high teniperalture, by [nenne of the hollow spirals or serpentines, with any number thereof, substantially es described und set forth. A

i PIERRE J @SEEE BADOUX.

Witnesses p l T'. W. R. Schumann,

Jumps SiLvEnspu'm. 

